1 Let S be a non empty subset of R that is bounded above a Prove that sup S is unique In other words if s and s2 are both the

Question

1 Let S be a non empty subset of R that is bounded above a Prove that sup S is unique In other words if s and s2 are both the lowest upp bounds of S then s 82 b Suppose sup S belongs to S Prove that sup S max S

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